What powers the 6.7L Cummins Turbo Diesel?

When drivers choose a RAM heavy-duty pickup truck, they expect strength, durability and dependable performance. At the center of that experience is the 6.7L Cummins® Turbo Diesel engine, powered by a next-generation Holset® turbocharger engineered for responsiveness, efficiency and reliability.  

Does the RAM heavy-duty pickup have a Cummins turbocharger?

Yes. The latest 6.7L Cummins Turbo Diesel engine, developed in partnership with RAM, features a Cummins turbocharger system designed specifically for RAM heavy-duty pickup and Chassis Cab applications.

The system powers RAM 2500 and 3500 Heavy-Duty pickups, along with RAM 3500, 4500 and 5500 Chassis Cab trucks. Built on a long-standing collaboration between Cummins and RAM, the latest engine delivers enhanced performance with High-Output ratings of 430 horsepower and 1,075 lb.-ft. of torque for pickups, and 360 horsepower and 800 lb.-ft. of torque for Chassis Cab models.  

What type of turbo does the 6.7L Turbo Diesel engine have?

The new 6.7L Cummins Turbo Diesel engine features the Holset® HE300VG 8th Generation variable geometry turbocharger, developed by Cummins Turbo Technologies. This latest evolution delivers faster response, improved efficiency and refined boost control through advanced aerodynamics and a patented variable geometry system designed specifically for pickup applications.

What sets this turbo apart from the previous HE300VG generation?

Compared to the previous HE300VG generation, the new turbocharger introduces several key advancements designed to improve efficiency, responsiveness and drivability.

A patented multi-clearance vane system, along with new compressor and turbine wheel designs, delivers a 4-percentage-point efficiency improvement. The updated design helps the engine breathe more freely while improving fuel efficiency and responsiveness. A low thermal inertia design also improves warm-up capability.

Together, these enhancements help deliver smoother acceleration, stronger towing performance, best-in-class engine braking and more consistent power delivery across the operating range.

The turbocharger also features a smaller and lighter design, helping improve engine responsiveness and fuel efficiency. Updated turbine wheel aerodynamics and refined electronic controls provide more precise management of airflow and exhaust pressure, allowing the system to adapt quickly to changing road conditions and driving loads.

Can the 6.7L Turbo Diesel turbo withstand real-world conditions?

Yes. While the turbocharger improves fuel efficiency and acceleration, it is also engineered for durability in demanding real-world applications.

Cummins engineers designed the system to perform in high-load, stop-and-go and towing conditions common in personal and light commercial use. Whether towing through steep grades, operating in high temperatures or handling continuous daily use, the turbocharger is built to withstand demanding operating environments.

The upgraded actuator controlling the turbocharger’s internal vanes also improves durability and boost control under stress, helping deliver long-term reliability mile after mile.

Where is the turbo for the 6.7L Turbo Diesel engine made?

Every turbocharger used in the 2025 6.7L Cummins Turbo Diesel engine is designed, manufactured and assembled in the United States at Cummins’ Charleston Turbo Plant (CTP) in Charleston, South Carolina.  

Each turbocharger is assembled at CTP using specialized equipment and rigorously tested to help ensure quality and performance. Once completed, the turbochargers are shipped to the Cummins MidRange Engine Plant (CMEP) in Columbus, Indiana (U.S.), where they are installed on engines destined for RAM Trucks assembly lines.  

This U.S.-based supply chain reflects Cummins’ continued investment in domestic manufacturing, engineering expertise and product quality.
 

Final takeaways

The Holset HE300VG 8th Generation turbocharger is more than a performance upgrade — it is a core part of the 2025 RAM Heavy Duty driving experience.

From improved efficiency and responsiveness to quieter operation and long-term durability, the turbocharger reflects Cummins’ continued focus on engineering innovation and dependable performance.

Backed by decades of experience, engineered for demanding conditions and built at Cummins’ Charleston Turbo Plant, this turbocharger is designed to help drivers tow confidently, respond faster and get the job done.